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C Concurrency Less Big Fail
int64_t AddAndGetAtomic(Object *o, int64_t amount) {
int64_t oldval;
int64_t returnval;
bool success = 0;
do {
oldval = o->counter;
returnval = oldval + amount;
success = OSAtomicCompareAndSwap64(oldval, returnval, &(o->counter);
} while (success == 0);
return returnval;
}
